p.5 #1 · Canon issued a statment regarding the overheating of the R5
Jesse Evans wrote:
The Canon R5 is capable of unlimited 4k30 (when using pixel binning rather than 8k oversampling) 10-bit 4:2:2 internal recording at room temperature, which means that it should satisfy basically anybody using this to film wedding ceremonies.
I don't really agree with this. Pixel binning means aliasing, which could cause problems with a groom's suit or a bride's veil. I see that mode as more suitable for a talking head in a studio, where set decoration and costume can be (and for decades has been) controlled to avoid it.
The camera's antialiasing filter in conjunction with true downsampling in the camera's 4K 30fps "oversampling" mode means that is the one I'd want for a wedding.
It's a little odd since the R system seems heavily oriented towards wedding photographers, but I wonder whether the cramped accomodation of most Japanese homes means Canon thinks that should be 1080p. Remember, Japan has lost its 4K television industry to Korea.
I'm not a wedding photograoher, though, so I don't know whether they really have a requirement for a body that can do both video and stills. I would have thought not, actually.
p.5 #2 · Canon issued a statment regarding the overheating of the R5
melcat wrote:
I don't really agree with this. Pixel binning means aliasing, which could cause problems with a groom's suit or a bride's veil. I see that mode as more suitable for a talking head in a studio, where set decoration and costume can be (and for decades has been) controlled to avoid it.
The camera's antialiasing filter in conjunction with true downsampling in the camera's 4K 30fps "oversampling" mode means that is the one I'd want for a wedding.
It's a little odd since the R system seems heavily oriented towards wedding photographers, but I wonder whether the cramped accomodation of most Japanese homes means Canon thinks that should be 1080p. Remember, Japan has lost its 4K television industry to Korea.
I'm not a wedding photograoher, though, so I don't know whether they really have a requirement for a body that can do both video and stills. I would have thought not, actually....Show more →
Pixel binning does not result in any higher aliasing than sampling from a 4k sensor. You are getting the weighted average of 4 pixel values, which actually decreases moire. Pixel binning averages the 4 values of an RGBG square at read time. This is different from oversampling / downsampling which implies downsampling after demosaicing, which results in the highest quality video possible. Nevertheless, true pixel binning reduces moire.
Line skipping is where you will find increased moire, as it is skipping over pixels.
Now, digging a little bit, while people are referring to this mode as pixel binned, it doesn't actually look like Canon has published what method they are using to achieve the 4k "non-oversampled" mode. And people on the internet frequently use the term pixel binning incorrectly, when in fact line skipping is being used.
So we will I guess have to wait for someone to test it, or for a manual from Canon before coming to a final conclusion. Whether we disagree at this moment isn't really material, because nobody knows what the non-oversampled 4k video from the EOS R5 looks like at this moment.
I agree with you that if moire is a large issue in this mode, it will be harder to justify using it. However, if it were the case, and I wanted the R5 for other reasons, this issue could still be worked around by downsampling to 1080p in post, and re-upsampling on export. This would obviously yield lower sharpness results than shooting on something like an A7rIV, which engages in line skipping to produce a 6k image before downsampling to 4k, but it would almost certainly be sharper than any client actually wanted or cared for it to be.
